Hitachi EX200-5 Hydraulik-Hauptpumpe – China Instandsetzung (Hefei Montage: 9150726 / 9152668)

Beschreibung

Detaillierte Informationen

1. Wesentliche Merkmale und Vorteile

• Precision‑remanufactured for Hefei‑assembled EX200‑5 – This twin pump set (9150726 / 9152668) is specifically rebuilt to Hitachi‘s factory specifications for the locally produced (Hefei) EX200‑5 excavator. Every critical component – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – is either renewed or replaced with new, high‑quality parts. The result is restored hydraulic performance at a fraction of the cost of a new genuine pump set.

• Original Hitachi tandem axial piston architecture – The two pumps work together as a variable displacement tandem system, powering travel, swing, boom, arm, and bucket circuits independently. This design ensures smooth, coordinated multi‑function operation without internal flow loss – exactly as your EX200‑5 performed when it left the Hefei assembly line.

• Restored 20‑ton class power – After remanufacturing, the pump set delivers a rated working pressure of 31.9 MPa (≈4,630 psi) with intermittent peaks up to 34.3 MPa (≈4,975 psi). Combined flow is approximately 360‑400 L/min at rated engine speed. Your excavator regains full digging force, fast cycle times, responsive swing, and powerful travel.

• Integrierte lastabhängige Leistungsregelung – The factory power control (load‑sensing) system is completely rebuilt. It continuously matches pump output to actual working demand, reducing fuel consumption, preventing engine stall under sudden load, and extending the life of the entire hydraulic system. The integral pilot gear pump is also fully remanufactured.

• Kostengünstige Alternative zum neuen Original – A new Hitachi main pump set for a 20‑ton excavator is a major investment. Our remanufactured 9150726 / 9152668 gives you the same fit, form, and function at a significantly lower price, without sacrificing reliability. Each pump is dyno‑tested before dispatch.

• Direkter Schraubersatz (Plug-and-Play) – Mounting flanges, drive shaft splines, and hydraulic port configurations are restored to original Hefei‑spec Hitachi dimensions. No modifications, no adapters, no fabrication – your mechanic unbolts the old pumps and bolts these in.

• Sichtprüfung vor dem Versand – We send you clear, high‑resolution photographs of the actual remanufactured units (mounting flanges, splines, port threads, castings, overall condition) before packing. You approve shipment – we never ship blind.

• Schnelle Lieferung – 5–8 working days from our Guangzhou warehouse. Monthly supply capacity of 300 sets, available for single‑set or bulk orders.

2. Anwendungen

The remanufactured Hitachi 9150726 / 9152668 main pump set is ideal for the Hefei‑built EX200‑5 (20‑ton class) used in demanding job sites:

• Schwerbau & Infrastruktur – Highway excavation, dam building, bridge footings, large‑scale earthmoving. The restored tandem pumps deliver simultaneous boom, arm, and travel power without internal leakage – no power fade, no sluggish response, even on long shifts.

• Steinbruch & Zuschlagstoffe – Loading trucks, stockpile management, and material handling in abrasive dust conditions. New bearings, seals, and wear plates ensure the pumps survive where worn units fail. Consistent flow and pressure mean faster cycle times and lower fuel consumption.

• Bergbauunterstützung – Site cleanup, road maintenance, drainage works, and equipment pad grading. The load‑sensing control reduces fuel burn during light‑duty cycles, saving money over thousands of operating hours.

• Abbruch & Schrottverarbeitung – Shock loads and vibration are routine. Our remanufacturing process replaces all wear components, restoring the pumps‘ ability to withstand harsh, unpredictable conditions.

• Gerätevermietungsflotte – 20‑ton excavators are rental workhorses. A remanufactured pump set offers predictable service life (3,000–5,000 hours) at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• Forstwirtschaft & Rodung – Steep slopes, fallen timber, hidden obstacles. The integral power control prevents engine stall under sudden load spikes, maintaining consistent hydraulic power for saws, grapples, and mulchers.

3. Warum wählen Hongtengda Teile – Remanufacturing Without Compromise

At Hongtengda Parts, we have been remanufacturing hydraulic pumps for Hitachi excavators since 2001. We know that a main pump failure on your EX200‑5 stops your job site completely. Our remanufacturing process is not a “clean and reseal” – it is a factory‑grade restoration.

Our 6‑step remanufacturing process:

1. Complete disassembly – Each pump is stripped down to individual components: cylinder block, piston assemblies, valve plate, swashplate, bearings, shaft, housing, and control valves.

2. Cleaning & crack inspection – All parts are thoroughly cleaned and inspected for cracks using dye penetrant testing on critical castings. Irreparable parts are scrapped.

3. Wear component replacement – All seals, O‑rings, bearings, and gaskets are replaced with new. The cylinder block and valve plate are re‑ground to restore flatness. Piston assemblies are matched as a set and replaced if worn. The swashplate surface is reconditioned.

4. Präzisionswiederaufbau – Components are reassembled using OEM torque specifications. Clearance tolerances on the cylinder block / valve plate interface are verified.

5. Hydraulikprüfstand validiert – The completed pump set is mounted to a test stand and run through its full pressure and flow range. We verify operating pressure (up to 31.9 MPa), flow rate (approx. 360‑400 L/min total), case drain leakage, and power control response. A test report is available upon request.

6. Final quality check & packaging – The pumps are painted, fitted with protective port caps, and packed in a heavy‑duty wooden case for export.

Why our remanufactured pump outperforms cheaper “rebuilt” units:

• New bearings and seals – Many budget rebuilders reuse old bearings to save cost. We do not. All rotating components get new bearings – the single most important factor for pump longevity.

• Präzisionsgeschliffene Verschleißflächen – The cylinder block and valve plate are re‑ground to restore flatness. A lapped surface is essential for low internal leakage. Without it, the pump will overheat and lose power within weeks.

• Full test report – Upon request, we provide a test report showing pressure, flow, case drain, and temperature measurements. You see the data before you buy.

What you are not buying: A used pump with new paint and a set of O‑rings. Our remanufactured pump set is restored to meet or exceed OEM performance standards – at a price that makes sense for your older EX200‑5.

• Über 25 Jahre Branchenerfahrung – Founded in 2001, we have remanufactured thousands of pumps for Hitachi, Caterpillar, Komatsu, Kobelco, Volvo, SANY, and many other brands.

• 90% - Verfügbarkeit auf Lager – 9150726 / 9152668 pump sets are in stock as remanufactured units, ready for dispatch from our Guangzhou warehouse.

• 24-Stunden-Versand – Von unserem Hub in Guangzhou zu Ihrem Spediteur in 1 Tag; internationale Bestellungen werden innerhalb von 24 Stunden versandt.

• Sichtprüfung vor dem Versand – We never ship a pump blind. You receive clear photos of the actual units before packing – you approve, we ship.

• Technische Unterstützung – Send us your EX200‑5 (Hefei) machine serial number and photos of the old pumps. We confirm compatibility and provide installation guidance within 2 hours.

Send us your Hefei‑built EX200‑5 machine serial number and photos of the old pumps – we will verify fitment, provide a quote, and document our pre‑shipment inspection within 24 hours.

Critical installation tip for the 9150726 / 9152668 remanufactured pump set:
– Die Die Gehäuseablaufleitung on each pump must be clear and unrestricted. A blocked case drain will blow the shaft seal instantly on first startup.
– Before installing the remanufactured pumps, flush the entire hydraulic system and replace all filters. Contaminants from the failed pumps will destroy a remanufactured unit just as quickly as a new one.
– Use new O‑rings and sealing washers on every hydraulic connection. Reused seals guarantee leaks.
– After installation, run the engine at low idle for 2–3 minutes with the pumps in neutral, then slowly cycle each function (boom, arm, bucket, swing, travel) to purge air from the system.
– Check pump alignment with the engine flywheel housing – misalignment causes premature bearing failure and shaft seal leakage.

Garantiehinweis: Die Garantiezeit beträgt je nach Produktdetails 3 bis 6 Monate. Wir erbringen keine Garantieleistungen für original gebrauchte oder wiederaufbereitete Teile. Unser Mehrwert wird im Voraus geliefert: sorgfältige Wiederaufbereitung, gründliche Prüfung und visuelle Überprüfung vor dem Versand. Für Kunden, die eine Option mit Garantie benötigen, können wir neue Aftermarket-Aggregate anbieten – fragen Sie unser Vertriebsteam.

The main hydraulic pump set is the heart of your EX200‑5‘s hydraulic system. Our remanufactured 9150726 / 9152668 gives you restored 20‑ton class performance at a cost that keeps your budget intact – not with shortcuts, but with a genuine factory‑grade restoration. Send us your Hefei EX200‑5 machine serial number – we will confirm compatibility and provide a quote within 24 hours.